Github user otaviojava commented on a diff in the pull request:
https://github.com/apache/tomee/pull/262#discussion_r240188979
--- Diff:
container/openejb-loader/src/main/java/org/apache/openejb/loader/FileUtils.java
---
@@ -20,18 +20,25 @@
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Hashtable;
+import java.util.concurrent.ThreadLocalRandom;
@SuppressWarnings("PMD.OverrideBothEqualsAndHashcode")
public class FileUtils {
- private static final java.util.Random _random = new java.util.Random();
+ private static final ThreadLocalRandom _random =
ThreadLocalRandom.current();
--- End diff --
hey, what David means is instead of having the field, just use it every
time.
E.g:
```java
public class FileUtils {
//not more the static field
private File home;
private FileUtils(final String homeDir, final String defaultDir) {
this(homeDir, defaultDir, SystemInstance.get().getProperties());
}
public static File createTempDirectory(final String pathPrefix) throws
IOException {
for (int maxAttempts = 100; maxAttempts > 0; --maxAttempts) {
final String path = pathPrefix +
ThreadLocalRandom.current().nextLong();
final File tmpDir = new File(path);
if (!tmpDir.exists() && tmpDir.mkdirs()) {
return tmpDir;
}
}
throw new IOException("Cannot create temporary directory at: " +
pathPrefix);
}
```
---
